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DTC P2263: Intake
Charge System Malfunction
TECHNICAL DESCRIPTION
- The ECM indicates or monitors a minimum prescribed value
of volumetric efficiency within the boost operation range, which is determined by the signals
from the throttle position sensor and the engine speed.
DTC SET CONDITIONS
Check Conditions
- Engine speed is between 3,000 and 5,000 r/min.
- Throttle position sensor (main) output voltage is more than 2 volts.
Judgment Criterion
- Volumetric efficiency is less than 100 percent for 2 seconds.
FAIL-SAFE AND BACKUP FUNCTION
- Fuel is cut in engine overboost condition.
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
- Turbocharger wastegate actuator failed.
- Turbocharger wastegate regulating valve failed.
- Charging pressure control system failed.
- Intake charge pressure leak.
- ECM failed.
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Required Special Tools:
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827: USB Cable
- MB991910: Main Harness A
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STEP 1. Using scan tool MB991958, check actuator test item
20: Turbocharger Wastegate Solenoid.
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| caution |
To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK"
(OFF) position before connecting or disconnecting scan tool MB991958.
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(1)Connect scan tool MB991958 to the data link connector.
(2)Turn the ignition switch to the "ON" position.
(3)Set scan tool MB991958 to the actuator test mode for item 20, Turbocharger Wastegate
Solenoid.
(4)
- An operation sound should be heard and vibration should be felt when
the turbocharger wastegate solenoid is operated.
(5)Turn the ignition switch to the "LOCK" (OFF) position.
Q.
Is the solenoid operating properly?
 Go to Step 2.
 Refer to DTC P0243 -
Turbocharger Wastegate Solenoid Circuit  .
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STEP 2. Check for intake system vacuum leak.
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Q.
Are there any abnormalities?
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Repair it. Then go to Step 7.
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Go to Step 3.
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STEP 3. Check the intake charge pressure.
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Refer to GROUP 15, On-vehicle Service -
Intake Charge Pressure Check .
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Q.
Are there any abnormalities?
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Repair or replace it. Then go to Step 7.
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Go to Step 4.
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STEP 4. Check the intake charge pressure control system.
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Refer to GROUP 15, On-vehicle Service -
Intake Charge Pressure Control System
Check .
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Q.
Are there any abnormalities?
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Repair or replace it. Then go to Step 7.
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Go to Step 5.
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STEP 5. Check the turbocharger wastegate actuator.
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Refer to GROUP 15, On-vehicle Service -
Turbocharger Wastegate Actuator Check .
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Q.
Are there any abnormalities?
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Repair it. Then go to Step 7.
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Go to Step 6.
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STEP 6. Using scan tool MB991958, read the diagnostic trouble code
(DTC).
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(1)Turn the ignition switch to the "ON" position.
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(2)Set scan tool MB991958 to the data reading mode for item 13, Throttle Position
Sensor (main).
| caution |
During a test drive, the data list must be read by someone other
than the driver.
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(3)Accelerate the vehicle within the engine speed range of 3,000 to 5,000 r/min while
a minimum of 2 volts is being output by the throttle position sensor (main).
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(4)After completing the test drive, read the DTC. Turn the ignition switch to the
"LOCK" (OFF) position.
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Replace the ECM. When the ECM is replaced, register the ID code. Refer to GROUP
42B, Diagnosis -
ID code Registration Necessity Judgment Table <Vehicles with KOS> or
GROUP 42C, Diagnosis -
ID Codes Registration Judgment Table <Vehicles with WCM> .
Then go to Step 7.
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It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How
to Use Troubleshooting/ Inspection Service Points -
How to Cope with Intermittent Malfunctions .
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STEP 7. Using scan tool MB991958, read the diagnostic trouble code
(DTC).
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(1)Turn the ignition switch to the "ON" position.
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(2)Set scan tool MB991958 to the data reading mode for item 13, Throttle Position
Sensor (main).
| caution |
During a test drive, the data list must be read by someone other
than the driver.
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(3)Accelerate the vehicle within the engine speed range of 3,000 to 5,000 r/min while
a minimum of 2 volts is being output by the throttle position sensor (main).
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(4)After completing the test drive, read the DTC. Turn the ignition switch to the
"LOCK" (OFF) position.
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Retry the troubleshooting.
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The inspection is complete.
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